// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
//	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package sessionutil

import (
	"context"

	"github.com/blang/semver/v4"
)

type SessionInterface interface {
	UnmarshalJSON(data []byte) error
	MarshalJSON() ([]byte, error)

	Init(serverName, address string, exclusive bool, triggerKill bool)
	String() string
	Register()

	GetSessions(ctx context.Context, prefix string) (map[string]*Session, int64, error)
	GetSessionsWithVersionRange(prefix string, r semver.Range) (map[string]*Session, int64, error)

	GoingStop() error
	WatchServices(prefix string, revision int64, rewatch Rewatch) (watcher SessionWatcher)
	WatchServicesWithVersionRange(prefix string, r semver.Range, revision int64, rewatch Rewatch) (watcher SessionWatcher)
	Stop()
	UpdateRegistered(b bool)
	Registered() bool
	SetDisconnected(b bool)
	Disconnected() bool
	SetEnableActiveStandBy(enable bool)
	ProcessActiveStandBy(activateFunc func() error) error

	GetAddress() string
	GetServerID() int64
	IsTriggerKill() bool
}

type SessionWatcher interface {
	EventChannel() <-chan *SessionEvent
	Stop()
}
